|Publication number||US7670328 B2|
|Application number||US 10/449,503|
|Publication date||Mar 2, 2010|
|Priority date||May 31, 2002|
|Also published as||CA2485904A1, CA2485904C, CA2485910A1, CA2485910C, CA2898210A1, DE60327625D1, DE60328386D1, DE60336939D1, EP1509139A1, EP1509139B1, EP1509140A1, EP1509140B1, EP2039298A2, EP2039298A3, EP2064997A2, EP2064997A3, EP2064997B1, US7699850, US8480632, US8506568, US8715287, US8876826, US8992535, US9314270, US20030225344, US20030225411, US20050171504, US20060036212, US20060052790, US20060167378, US20060167379, US20080015467, US20080015468, US20090093830, US20100137740, US20100160867, US20140142577, US20140288499, US20150127006, US20150366569, WO2003101306A1, WO2003101307A1|
|Publication number||10449503, 449503, US 7670328 B2, US 7670328B2, US-B2-7670328, US7670328 B2, US7670328B2|
|Inventors||Larry J. Miller|
|Original Assignee||Vidacare Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (351), Non-Patent Citations (77), Referenced by (57), Classifications (49), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application claims priority to U.S. Provisional Patent Application Ser. No. 60/384,756, filed May 31, 2002, and entitled “Apparatus and Method to Provide Access to Bone Marrow.”
This application is copending to patent application entitled, “Apparatus and Method to Access the Bone Marrow for Oncology and Stem Cell Applications”, Ser. No. 10/448,650, filed May 30, 2003; and copending to patent application entitled “Apparatus and Method to Access Bone Marrow”, Ser. No. 10/449,476, filed May 30, 2003, which claim priority from the same provisional application.
The present invention is related in general to a medical device to access the bone marrow and specifically to an apparatus and method for penetrating the bone marrow with a powered drill and inserting a penetrator or needle.
Every year, millions of patients are treated for Life-threatening emergencies in the United States. Such emergencies include shock, trauma, cardiac arrest, drug overdoses, diabetic ketoacidosis, arrhythmias, burns, and status epilepticus just to name a few. For example, according to the American Heart Association, more than 1,500,000 patients suffer from heart attacks (myocardial infarctions) every year, with over 500,000 of them dying from its devastating complications.
An essential element for treating all such emergencies is the rapid establishment of an intravenous (IV) line in order to administer drugs and fluids directly into the circulatory system. Whether in the ambulance by paramedics, or in the emergency room by emergency specialists, the goal is the same—to start an IV in order to administer life-saving drugs and fluids. To a large degree, the ability to successfully treat such critical emergencies is dependent on the skill and luck of the operator in accomplishing vascular access. While it is relatively easy to start an IV on some patients, doctors, nurses and paramedics often experience great difficulty establishing IV access in approximately 20 percent of patients. These patients are probed repeatedly with sharp needles in an attempt to solve this problem and may require an invasive procedure to finally establish an intravenous route.
A further complicating factor in achieving IV access occurs “in the field” e.g. at the scene of an accident or during ambulance transport where it is difficult to see the target and excessive motion make accessing the venous system very difficult.
In the case of patients with chronic disease or the elderly, the supply of easily-accessible veins may be depleted. Other patients may have no available IV sites due to anatomical scarcity of peripheral veins, obesity, extreme dehydration or previous IV drug use. For these patients, finding a suitable site for administering lifesaving drugs becomes a monumental and frustrating task. While morbidity and mortality statistics are not generally available, it is known that many patients with life-threatening emergencies have died of ensuing complications because access to the vascular system with life-saving IV therapy was delayed or simply not possible. For such patients, an alternative approach is required.
In accordance with teachings of the present invention, an apparatus and method are provided to allow rapid access to the bone marrow so that drugs and fluids can be infused into the circulatory system.
One aspect of the present invention includes an apparatus and method that will quickly puncture a bone with minimal trauma to the surrounding tissues and place a needle directly into the bone marrow to allow infusing drugs and fluids into the bone marrow.
One embodiment of the present invention includes a device that is a hand-held, battery-operated device that supplies rotational force to a needle in order to penetrate the bone marrow. In another embodiment of the present invention it is powered by means of a spring which can be rewound or by other mechanical means that do not include an electrical or battery power source. A spring-loaded driver may be used to wind up a spring as a power source to rotate the needle because it is cheap, reliable and has a long shelf life. One embodiment of a spring-powered device may include various mechanisms for modulating the speed of needle rotation.
Another embodiment of the invention calls for it to be reusable or disposable. In some embodiments the device itself may be reusable and the tissue penetrator or needle is disposable. A needle cover or shield can be incorporated into all embodiments.
In yet another embodiment of the invention, a unit dose of medication can be attached or incorporated into the device by means of a proprietary connection.
In the embodiments mentioned above, the intraosseous needle can be stabilized, once inserted, by means of a shield and a VELCRO strap.
In another embodiment of the invention, the device can be adapted to remove a specimen of tissue from the bone marrow (a bone marrow biopsy). In this embodiment a needle with three holes may be used to aspirate three different sites in the bone marrow.
In yet another clinical embodiment the device can be used to place an intracranial probe for pressure monitoring into the brain. In this embodiment there can be a two-way flow of fluids into or out of the brain depending on the clinical situation.
In the various embodiments listed, different sizes of the device and or the needle are available to accommodate different patient sizes or adult and pediatric sizes.
Various embodiments of the device can be configured for ergonomic comfort and ease of use. Alternate configurations of the motor-needle interface which may be required to achieve an ergonomic design include a flexible shaft or a 45 degree gear arrangement between the motor and the needle.
One embodiment of the present invention includes a device that may rapidly penetrate bone tissue and includes a fluid reservoir, which may be connected through an external port to a source of intravenous fluid. Another embodiment of the present invention includes a device for rapid penetration of bone, which may be used to directly insert a needle into a patient's bone marrow and then be disconnected from the needle. This allows a source of intravenous fluids to be connected to the needle that is positioned in the bone marrow. Still another embodiment of the present invention includes a device for rapid penetration of bone tissue having one or more fluid reservoirs that may be removed and exchanged with pre-filled drug ampules or fluid reservoirs.
In an alternate embodiment, the needle is operable to be detached from the hand-held housing after implantation such that the needle hub can be connected to an external source of drugs or medication. This feature may include a quick release mechanism. After detaching the needle from the device, a particular type of needle known as a “breakaway” needle may be implanted. The advantage to this type of needle is that it allows the insertion of a plastic intraosseous catheter into the bone marrow and removal of the surrounding needle. This may be advantageous because it would allow the fixation of the catheter to the skin with another more desirable apparatus that is stable and resistant to infection.
Technical benefits of the present invention include a device for rapid penetration of bone tissue that is portable and may be carried in the pocket or a portable emergency kit of a health care provider for emergency access to a patient's circulatory system.
Technical benefits of the present invention include obtaining access to the circulatory system that is fast, inexpensive and poses minimal risk to a patient.
An apparatus formed in accordance with teachings of the present invention may be used to quickly penetrate the outer layer of the bone so that drugs and fluids can be injected directly into the bone marrow.
The present invention provides an apparatus and method for use in emergency rooms, on the battlefield, in Emergency Medical Services settings, oncology treatment and veterinary applications.
Battery Powered Motor
Spring Powered Motor
Electrical Powered Motor
Hollow drill (needle)
Luer Lock for standard syringe and IV connection
Significant Market Appeal
Automatic Detachable Mechanism
Meets FDA 510 k Approval
Unit Cost $25 for Some Models
A more complete and thorough understanding of the present invention and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawings, in which like reference numbers indicate like features, and wherein:
Preferred embodiments of the invention and its advantages are best understood by reference to
Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alternations can be made herein without departing from the spirit and scope of the invention as defined by the following claims.
These are only a few examples of the many configurations that are possible. The key is to design the driver for the best and most comfortable human (hand) interface, providing the best control and best visualization.
The body of the driver can be plastic, ABS, metal, or any other suitable material. Bearings can be metal, ceramic, plastic, ABS or any other suitable material.
The needle shield can be of any configuration as long as it provides protection to the user from being accidentally stuck by the needle, either before or after use. It will be retractable or removable. The driver can also stabilize the skin during the drilling process.
Switch (Trigger) Manual Operation
The switch can be mechanical or electrical. It can be enclosed (to make it water proof) or exposed for easier use. Several embodiments are considered.
Switch (Trigger) Automatic Operation
The switch may be activated by an event, such as the shield retracting or a deliberate action, such as the user pulling a pin, thus preventing accidental discharge and providing additional safety features.
Control Depth of Penetration.
In addition to
Release Mechanism (Needle from the Driver)
A well-designed release mechanism is necessary to assure worry free operation of the device. Ideally, the needle should separate from the chuck (holding mechanism) automatically upon proper penetration and depth of the needle into the bone. Otherwise the user might accidentally withdraw the needle from the bone while taking away the driver. Additional steps to separate the trocar and the needle from the body (motor and driver) would introduce the possibility of error and require greater skill levels to properly use the device. Therefore a trouble free chuck is required. It must be sturdy and proprietary to prevent miss-use.
Proprietary Needle Holder
In order for the VidaPen IO needle to be competitive in the market place, it must utilize a standard Luer lock mechanism. IV fluids and standard syringes use the Luer lock to function (connect to the needle) for giving drugs, fluids and blood. A Luer lock consists of a male portion (connected to the needle) and a female portion connected to the syringe or IV line. In order to protect VidaPen from competitors (misuse) the female Luer lock must be connected to the chuck (holding mechanism) of the driver by a proprietary design. The embodiment of this claim utilizes a key-and-lock mechanism for easy insertion and release.
Reduction Gear for Power and Speed
In order to provide the power necessary to drill through the hardest bone, VidaPen's needle will need to have the required torque. It will be necessary to increase the torque provided by a small DC motor (or other motor i.e. CO2 powered motor) by incorporating a gear into the drive train. Fortunately, most DC motors operate at high RPM and are thus suitable to be geared down. The needle's ideal rotational speed is slower than most OEM motors. Therefore, the gearbox (or gearing arrangement will be ideal to slow the drill to optimum speeds.
Needle Tips (Cutting Surface)
Many types of cutting tips have been devised for bone drills. This design embodies the concept of using the outer needle and the inner trocar as a single unit for optimal penetration of bone with minimal disruption of the anatomy. This is important from the standpoint of keeping the side port open for injections and aspiration. In addition, this embodiment will allow for a tight fit between the needle and the bone for better fixation and prevention of leakage (extravasation).
Reusable Driver/Disposable Needle
One embodiment of the device calls for it being disposable. Another embodiment is designed for the body (driver) to be reusable and the needle to be disposable. This is made possible by providing a chuck that mates with a proprietary shaft attached to the needle's Luer lock. The needles must maintain sterility during storage and mounting of the needle while the driver does not have to be sterile. The driver will be rugged in design and the battery (or other power source) will be rechargeable or the battery will be easy to replaced with off-the-shelf batteries.
Spring Loaded Driver
This embodiment uses a wind up spring as a power source to rotate the needle. This approach bypasses the inherent problems of motors: expense; reliability; weight; and size; and the limitations of batteries: size; weight; shelf life; reliability; decreased efficiency at low temperatures, and cost. Springs are cheap, reliable, long shelf life, small, low weight, predictable and operate well under a wide range of environmental conditions including heat and cold. The reason a wind-up-spring is an excellent choice for this application is because the VidaPen needle requires high torque for only a short period. The maximum time needed is less than 6 seconds, which translates into @ 100 revolutions. Further, a spring meets the requirements of high reliability under a wide range of circumstances. Motors and batteries can serve this purpose, however, it is waste of resources and adds unnecessary complexity to have such a power source that is only required for 6 seconds.
Paramedics, EMS, and the Military
Special uses for the VidaPen include operating in the field, where ruggedness and durability are of paramount importance. The device may be designed to be water proof, temperature resistant, crush proof and be made in different shapes and colors. In addition, the pre-hospital and combat situations are ideally suited to use the “unit dose” version (Vidapen II). That is because often what the medic needs is simply a one-time dose of medication, such as an antidote for poison or epinephrine, in order to stabilize the patient. Unit dose ampules are widely used by paramedics to give a predetermined amount of drug for a particular indication. There are a limited number of drugs needed to fulfill that need.
VidaPen I for Injecting Multiple Drugs and Fluids.
VidaPen I is designed to provide rapid vascular access in less than 6 seconds.
Drilling into bone with a hollow drill (needle) sometimes plugs the orifice and the side ports. To overcome that problem a trocar is often used. A trocar is a rod within the needle. It is removed after placement in the bone.
Stabilizing the IO Needle
Stabilization of the IO needle is paramount for its success. Stabilization (how firmly the needle is seated in the bone) is affected by several factors including maintaining proper alignment during insertion (drilling). Other factors include: thickness and hardness of the bone; the length of the needle (longer needles are prone to rocking movements during use by virtue of their longer leverage arm); diameter of the hole during drilling compared to the diameter of the shaft at the point of seating (how loose or how tight a fit); smooth walled needle vs. threaded needle; and movement of the patient during use (causing rocking of the needle and subsequent loosening).
Prevent and Manage Extravasation
The end result of a good seal between the needle and the bone is that fluid and drugs injected through the needle will flow into the circulatory system. The result of a broken seal (or loose seal) is that some of the fluid will extravasate (leak) into the surrounding tissues and may cause a compartment syndrome. This condition is one of the most frequent complications of IO use and one of the most serious. In the compartment syndrome pressure from the leaking fluid builds up in the leg (which has limited capacity for expansion) and cuts off the circulation to the foot. Therefore, precaution must be taken to prevent this complication and health providers must monitor their patients for the development of extravasation. This problem has never been adequately addressed by current manufactures of IO needles.
Stabilization of VidaPen in Moving Patients
Being able to place the IO needle precisely in the target area of the tibia is a concern when patients are moving or have the potential to move. Drilling in the wrong place could subject the patient to harm. Special cases of such movement include patients suffering from status epilepticus, and violent patients (drug overdoses or mental status changes) that need to be controlled for their safety and treatment. Epileptic patients may shake violently for prolonged periods, which makes starting an IV nearly impossible. Likewise it may be difficult in these patients to accurately place the VidaPen for IO insertion. Although the target area for successful IO placement is much larger than the target for placement of an IV, this problem will be minimized with a stabilization device. The device must be easy to apply, even in difficult situations in the field.
VidaVac (Oncology Biopsy Needle)
Oncologists sometimes are not able to successfully obtain a suitable specimen because of mechanical problems. Biopsy needles used today often come out empty because they failed to capture a specimen of bone. When they are successful, the specimen obtained is often inconsistent. Significantly, two procedures are often required because one instrument is required to obtain the bone specimen (biopsy) and another instrument (resulting in a second procedure) is required to obtain the liquid marrow specimen. VidaVac addresses these problems with a powered biopsy needle combined with a specimen needle that can be performed in one procedure.
Further, the needle may be coated with Heparin or other anticoagulant to prevent clotting.
VidaVac I (Powered Biopsy Device)
Currently, oncologists use a biopsy needle that is manually inserted, often with considerable force and difficulty. The procedure is painful for patients and time consuming for the doctor. Risks are high because of excessive handling of blood contaminated sharp instruments are required. Accidental needle sticks and missed targets further complicate the procedure. VidaVac solves these problems with a powered biopsy needle.
Special Considerations for Cancer
Extravasation (leakage) of cytotoxic drugs into the subcutaneous tissues during cancer treatment can be devastating. To prevent extravasation (leakage) of cytotoxic drugs using the VidaPen I, special precautions must be taken.
Use of a treaded needle, which has been shown to decrease leakage
Use of a tapered needle with progressively larger diameter to make a tighter seal
Use of methylmethacrolate or other sealant to provide a tight seal.
The injection of methylene blue dye into the needle prior to use to detect any leak.
VidaProbe VidaVent (for Neurosurgery)
Neurosurgeons frequently insert vents into the cranium after massive closed head injuries to monitor intracranial pressure. Preventing excessive pressure can make a profound difference in the outcome of a brain-injured patient. Currently, the placement of such a device takes several steps and considerable time. The VidaVent is designed to automate the procedure by providing a power drill to drive in the probe in one short step. The results will be a faster, safer and more palatable procedure.
The probe may detect pressure, chemicals, temperature, O2 stats, CO2 levels, or lactic acid.
The connector may be mechanical or electrical.
VidaPed (Pediatric Version)
Currently, infants and young children are candidates for standard manually inserted IO needles. Yet, some reluctance on the part of medics and doctors remains because the manual insertion process takes time and skill. In the process, the needle grinding through the bone causes concern to the provider. In addition, when the hard cortex is breached (entered) the needle may penetrate the opposite cortex (which causes extravasation) because of the large manual pressure being exerted. Therefore, the VidaPen is designed to permit use in small infants in a kinder/gentler way. Minimal pressure is required, because of the powered drill and so precise control of the depth of penetration can be maintained. The entire procedure is one-step and automatic, making it easier for the medic and the patient.
VidaVet (for Veterinary Applications)
Veterinarians frequently need to access the vascular system of companion animals for the purpose of diagnostics and treatment. These small animals often have tiny veins that are very difficult to access. While there is great need for this device in the veterinary market, vets require devices that are cheap and reusable. Therefore, the VidaVet will consist of a reusable driver and sterile disposable (throw away) needles.
After implantation of the IO needle, a special cap or cover will be strapped on to protect the device from self-destruction by the animal (prevent the animal from inadvertently pulling out the needle.
Spring Powered VidaPen I—Reusable
It may be advantageous to be able to rewind the spring for additional IO attempts should the first attempt fail. The ability to reload or rewind the spring is also necessary for applications using a reusable handle (with disposable needles). In these cases it is necessary to provide an easy mechanism to accomplish the rewind.
Spring Powered—Speed Control
The spring can be made with enough strength to give adequate torque to the needle for drilling through most bone applications. However, the rotational speed provided by the spring may be excessive and therefore, a means of controlling that speed is required.
Hand-Powered VidaPen I
It may be desirable to dispense with motors and springs altogether and power the rotation of the needle by hand. This would eliminate several potential problems associated with stored power devices and make the function totally dependent on the user.
A hinged grip that is squeezed by the user may be used to provide power to rotate the needle. Several mechanisms can be used to transfer the to-and-fro motion of the grip to rotational power to spin the needle. These are gear arrangements and/or lever/ratchet configurations.
A push handle may be used to propel a rod into the driver. This rod is fitted with spiral groves along the shank that mates with knobs in the gearbox to provide rotational power. This is mechanism is similar to Yankee screwdrivers. Two hands would be required—one to push the handle and the other to stabilize the driver.
An inertia motor may be used to drive the needle. This can be a flywheel or other spinning weight that will be used to rotate the needle. The user will provide rotation to the flywheel just prior to use by using any one of the mechanisms illustrated in
A key to successful use of the VidaPen is to configure the design to allow a natural interface between the user and the device as it is applied to the patient. Consideration is made for a grip that allows the medic to control the device and hold it securely in a natural position. In addition, the device must “feel” like other common tools used by the medic and allow steady positioning during use. Coupled-with this, the user must be able to see the target area and not have to assume an unnatural position to do so. Therefore, his/her eyes must be able to see the target area easily and in proper alignment throughout the procedure.
Mechanism to Allow Ergonomic Design
While ergonomics are important in the design of VidaPen, proper function is essential. In order to embody the mechanism in such a well-designed driver (handle) certain aspects of power transfer must be considered.
In some embodiments device 90 may be equipped with an on/off switch for starting and stopping the power supply. A battery recharger may be included in some models.
In some embodiments device 90 may include a plunger mechanism (not expressly shown) that is attached to the proximal end and designed to engage the interior surface of reservoir 91.
VidaPen technology has great promise for almost any serious emergency that requires intravenous (IV) access to administer life-saving drugs or fluids, when traditional IV access is difficult or impossible. These life-threatening conditions include, but are not limited to:
NOTE: IO is to be used primarily as a “bridge” (temporary fluid and drug therapy) until conventional IV sites can be found and utilized. This occurs because IO fluids stabilize the patient and expand their vascular compartment.
Emergency Medicine Indications (VidaPen):
Stocking of Emergency Equipment:
After acceptance in the emergency medical community as a reliable alternative for accessing the vascular system, VidaPen could become the standard of care for administering medications in life-threatening situations when IV access is difficult. Appropriately priced, the VidaPen could become required equipment for basic emergency kits:
More than 35,000 Advanced Cardiac Life Support (ACLS) ambulances are in service in the U.S. Each is equipped with emergency drugs and devices. Most are required to carry intraosseous needles and paramedics are trained in their use for pediatric emergencies. Paramedics often experience great difficulty establishing IV access in life threatening emergencies such as drug overdoses, cardiac arrest and status epilepticus. Since they are the first on the scene in most serious emergencies, they would welcome a device like the VidaPen, which could help them rapidly, administer medications and treat the emergency before permanent damage to the patient occurs. There is nothing like VidaPen on the market and some patients desperately need this route for emergency drugs;
More than 4,000 emergency rooms in the U.S. are required to treat life-threatening emergencies like shock trauma and cardiac arrest. ERs are stocked with the latest devices and equipment to help patients receive state-of-the-art treatment. However, there is no more exasperating situation for the physician or potentially catastrophic condition for the critical patient, than the inability to establish intravenous access. VidaPen can provide a simple and straightforward solution for an extremely difficult clinical problem;
Hospital Crash Carts:
Hospitals are required to provide crash carts on every patient ward. It is estimated that 6,000 U.S. hospitals stock more than 60,000 crash carts. These crash carts are stocked with defibrillators, IV access devices, including central venous catheters, IV fluids and drugs for common emergencies. Nurses and other healthcare workers using these crash carts are often inexperienced in such emergencies and have difficulty establishing IV access. VidaPen can provide the long sought IV alternative in the difficult patient;
Automatic injectors are widely used in the military. During Desert Storm, combat soldiers carried an atropine auto-injector for nerve gas poisoning. Current auto-injectors are limited to intramuscular injections. The VidaPen could vastly expand the scope of treatment to include intravenous drugs, without having to be skilled in the technique of intravenous insertion.
Internal Medicine/Critical Care:
Most acute care hospitals in the U.S. operate Intensive Care Units (ICUs) for seriously ill patients. Establishing and maintaining venous access in these patients is often a challenge. VidaPen would be a welcome device for administration of drugs and fluids for these critical patients.
Cancer Applications (VidaVac):
In addition to the emergency medicine applications, where injection is the mode of operation, this technology can also be used to aspirate fluid. Thus, the VidaVac is ideally suited for the treatment and diagnosis of cancer.
Bone marrow harvest
Bone marrow diagnostics
Infusion of chemotherapy and fluids
VidaPen has great promise for many other diseases. Secondary applications will be developed after success of the primary applications. Some may evolve into primary markets. These include:
Cranial vent (closed head injury requiring monitoring of intracranial pressure)
Stem Cell Harvest;
For regeneration of damaged tissue (heart muscle, articular surface, nerves and spinal cord, bone and spinal fusions)
Intraosseous access has been used extensively in animal research. Increasing use of parenteral medications in companion animals accompanied by difficulty finding suitable veins to administer these drugs makes IO infusion an attractive alternative. The VidaVet appears ideally suited for these applications.
Epilepsy, An Example of VidaPen's Unique Solution:
Ten percent of the population experience a major seizure in their lifetime and more than 2,500,000 people in the United States have epilepsy. Grand mal seizures represent one of the most dramatic events in medicine. During the seizure, which usually lasts 60 to 90 seconds, patients typically fall to the ground, become rigid with trunk and extremities extended, and shake violently. The most dreaded progression of seizures is status epilepticus, a condition defined as a continuous seizure lasting more than 30 minutes or two or more seizures that occur without full conscious recovery between attacks. Convulsive status epilepticus requires urgent, immediate treatment. Patients are at risk for serious injury, hypoxemia, circulatory collapse, permanent brain damage and death. The overall mortality of convulsive status epilepticus is up to 35 percent.
Intravenous Access Required:
Intravenous access with a large bore needle/catheter must be established to administer anticonvulsant medications. These include a benzodiazepine followed by phenytoin and/or phenobarbitol for immediate seizure control and prevention of further seizures. There are no satisfactory oral, rectal, or intramuscular medications that will control status epilepticus.
The problem facing clinicians and paramedics treating patients with status epilepticus is the difficulty establishing venous access. Without adequate venous lines none of the effective anticonvulsants can be given. During seizures the violent shaking makes accessing a satisfactory vein difficult. Often after the line is established, further shaking dislodges the IV or causes it to infiltrate.
Danger of Accidental Puncture:
Further, caregivers are at great risk of puncturing themselves with a needle when attempting to establish venous access in a patient during a seizure. Through no fault of their own, seizing patients, by jerking and thrashing around, turn the safest procedure into a terrifying venture. Doctors, nurses, and paramedics work in mortal fear of contracting AIDS and hepatitis through an inadvertent puncture with a contaminated needle.
Central Venous Access:
In an attempt to solve the venous access problem, emergency physicians and intensivists have turned to establishing a central line (intravenous catheter placed in a large central vein such as the subclavian or femoral vein). However, with this method, even under ideal conditions, there is an increased incidence of serious side effects such as pneumothorax, hemothorax, inadvertent puncture of a major artery, infection, venous thrombosis, and embolus. In the case of a patient with status epilepticus, this method becomes increasingly difficult and dangerous for all of the above-mentioned reasons. Therefore, most doctors are reluctant to even attempt a central line until seizures have ceased.
VidaPen provides alternative, safe IV access:
The VidaPen has been designed to quickly, and safely access the vascular system in difficult cases, like status epilepticus, giving medics the opportunity to administer crucial medications (see the Scientific Appendix for a more complete description of VidaPen's use in epilepsy).
Other Emergency Conditions that will Benefit from the VidaPen:
Dialysis patients who often come to the emergency room in life threatening situations such as pulmonary edema (water on the lungs) or high potassium leading to cardiac arrest. These patients typically have troublesome or non-existent veins. The VidaPen could give these patients hope for a better quality of live and decrease their mortality.
Suicide attempts and drug overdoses often present in coma requiring immediate intravenous access to give antidotes and life saving medications such as Narcan. These patients usually have difficult venous access due to long term abuse of their veins. The VidaPen can give these patients an alternate access route while improving the safety of the healthcare workers.
Trauma victims often present in shock due to blood loss requiring swift replacement to save vital organs. Because of the shock condition (decreased blood pressure), veins collapse and are often impossible to find. The VidaPen can save precious minutes for paramedics and trauma surgeons responsible for their care.
Cardiac arrest, drug overdoses, diabetic ketoacidosis, arrhythmias, burns, stroke, coma, etc.
VidaPen provides a logical, safe and easy alternative to IV access in all such serious emergencies.
Emergency Medicine, “My Kingdom for an Intravenous Line”:
Life-threatening medical emergencies affect millions annually. Standard treatment requires administering intravenous (IV) drugs and fluids. Yet, for more than 4 million patients annually this treatment is not available because intravenous lines cannot be readily established. For these patients, finding a suitable alternative treatment becomes a monumental and sometimes impossible task. Thousands of patients with such emergencies die because life saving medications cannot be administered.
An accepted alternative route to give IV medications is through the bone marrow (intraosseous, or IO, access). All drugs tested enter the circulation just as rapidly via the intraosseous route as they do when given intravenously. In fact, the bone marrow is considered a large non-collapsible vein. Currently, the IO route is used for alternative emergency access in pediatric patients, whose bones are soft enough to permit manual insertion of IO needles. However, no practical device is available for IO access in adults, because of their hard bones.
VidaPen I & II, New Capability for Emergency Medicine:
VidaPen is being developed to meet this clinical need. The VidaPen I is a small battery powered device that penetrates the bone with a hollow drill that provides IO access. VidaPen II is a small auto-injector that penetrates the bone with a hollow drill and automatically injects medications into the circulation in less than 3 seconds. VidaPen's approach vastly expands the usefulness of IO administration in the pediatric population and also, for the first time, makes possible the use of IO technology for the adult population.
VidaPen technology offers great promise for almost every serious emergency that requires rapid and reliable vascular access to administer life-saving drugs or fluids, when traditional IV access is difficult or impossible. Such emergencies include shock, trauma, cardiac arrest, drug overdoses, diabetic coma, burns, dehydration, seizures, allergic reactions, and arrhythmias. There are 100 million visits to emergency rooms annually. Statistics show that vascular access is difficult or impossible in 4 million patients annually.
Cancer, “Sometimes the Treatment is Worse than the Disease”:
Cancer patients often endure pain and discomfort in their quest for a cure. Among the most painful procedures these patients must encounter is bone marrow aspiration (biopsy). This arduous procedure is necessary to make the correct diagnosis, to monitor the success of treatment, or to undergo bone marrow harvesting prior to transplantation. More than 30,000 bone marrow transplants are performed in the US annually and over 200,000 bone marrow biopsies are performed. Bone marrow sampling is not a gentle procedure and is difficult for both the patient and the physician. The instrument used to penetrate the bone is a large nail-like device. Oncologists push with considerable force and twist on the handle to grind through the harder crest of the bone, into the softer marrow, Safety (contracting AIDS) is a major concern for oncologists, because repeated manipulation of a blood-contaminated needle is necessary.
VidaVac I & II, New Instruments in the Treatment of Cancer:
Instead of having to push and grind into the bone, VidaVac I is a small battery powered instrument that permits the oncologist to automatically drill into the marrow with minimal effort to withdraw specimens for diagnostics (biopsy). VidaVac II automatically withdraws marrow for transplantation. The end result is a safe, successful completion of bone marrow harvesting with less pain for the patient. It enables oncologists to treat patients in a kinder, gentler way, significantly decreasing risks for the doctor and time for the procedure. VidaVac is ideally suited for the treatment and diagnosis of cancer in the following situations:
Bone marrow harvest: For bone marrow transplants in cancer.
Bone marrow biopsy: For diagnosing cancer and hematological diseases.
Infusion of chemotherapy: For cancer treatment, when IV access is difficult.
Stem cell harvest (VidaVac): Stem cells taken from the bone marrow are targeted for regeneration of damaged heart muscle, nerves, spinal cord, cartilage, and bone;
Neurosurgery (VidaProbe): Closed head injury requiring introduction of a probe for monitoring and controlling intracranial pressure;
Veterinary (VidaVet): Venous access is difficult but necessary in many companion animals.
Emergency venous access is essential for the treatment of many serious diseases and conditions. Yet, many patients experience extreme difficulty obtaining timely emergency treatment because of the inability to obtain or maintain venous access. VidaPen offers an alternative access route that can mean the difference between life and death. Currently there is nothing like VidaPen on the market and some patients desperately need this route for emergency drugs. Physicians and paramedics should readily adopt the VidaPen technology, because they universally embrace intraosseous (IO) access for emergencies in infants. The next logical step is to use the VidaPen for IO access in adults. Based on the clear need for an acceptable alternative method to deliver life saving medications when IV access is unavailable, the VidaPen should gain rapid acceptance, significantly penetrating this market. VidaVac affords oncologists a much-needed powered instrument for the diagnosis and treatment of cancer. Accessing the bone marrow is an essential, everyday procedure, which currently takes considerable effort. Oncologists should readily adopt this technology because of the simplicity and safety it offers their patients.
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|U.S. Classification||604/506, 604/187, 606/167|
|International Classification||A61B17/58, A61B10/00, A61B17/16, A61B10/02, A61B17/56, A61M5/14, A61B17/00, A61M1/00, A61B17/32, A61B17/34, A61M31/00, A61B19/00|
|Cooperative Classification||A61B50/33, A61B2090/034, A61B90/70, A61B90/11, A61B2090/0813, A61B2050/3008, A61B10/0283, A61B17/1671, A61B17/3472, A61B17/1613, A61M2210/02, A61B17/32002, A61B17/1637, A61B2017/3405, A61M2005/1581, A61B17/3476, A61B2017/00734, A61M1/008, A61B2017/0046, A61B2217/005, A61M2005/1585, A61B2010/0258, A61B2017/320024, A61B2010/0208, A61B10/025, A61B17/32053, A61B2017/00398, A61M5/158|
|European Classification||A61B17/3205G, A61B10/02P4, A61M5/158, A61B17/34P, A61B17/32E2, A61B17/34L|
|May 30, 2003||AS||Assignment|
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